I think it's safe to assume that unless explicitly stated otherwise by the devs, all of the heist apps are version-locked. That's a reasonable thing to assume, right?
Just because any given dev hasn't promised us heist app licenses on par with paid licenses doesn't mean that we should assume they are, not does it give us the "right" to pirate their apps.
Simply put: if the people at Old Jewel gave us licenses on par with paid licenses for Trampoline, they would have said so. If the people at Old Jewel wanted us to have the next release of Trampoline for free, they would have done so; no .plist hacking required.
Sorry, but this is piracy.
AppShelf: MacHeist 3 Loot
AppShelf: nanoBundle 1
Check Reciept Page for nanoBundle 2 AppShelf Files.